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safety fuse

noun
  1. a slow-burning fuse for igniting detonators from a distance
  2. an electrical fuse that protects a circuit from overloading
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Examples from the Web for safety fuse

Historical Examples

  • He did not know that we had already worked out the safety-fuse, and that every group of lights was thus protected independently.

    Edison, His Life and Inventions

    Frank Lewis Dyer and Thomas Commerford Martin